Eat your hearts out. Several years back, in order to stay ahead of my young charges at summer camp, I bought the world's coolest flashlight. It has no batteries. Instead, there is a heavy magnet in the shaft which one shakes up and down such that it passes through a coil to generate electricity which is stored in a capacitor. It has no bulb to burn out. Instead, it has a LED at the business end. What is most cool of all about it is that the little campers are so enamoured of the device that they beg me to allow them to do the shaking before I hike back up the trail at night to the chaplain's quarters. Is it digital? Who cares. It is cool!